My Grandfather's IA Maps

I found these diagrams printed on glass slates in a box from my grandfather, entitled: "THERMAL AGING OF LAMINATES." I find it interesting that even engineers document similar processes and systems in the same was as UX designers today. These slides were in the same box as others showing graphs of different materials aging overtime. I assume they were used for a presentation as each slide has a number and all are on clear glass. I wonder what the words behind each one would have been. Here's my interpretation:

fig. 1
A proper assessment of a given property [for a thermal material] should be made by taking a look at its significance (usefulness to the client), calculating the value of the property at hand, and evaluating the level of economic efficiency, which can be done by measuring how much time and equipment must be used to create the material.

fig. 2
Factors that affect the evaluation of the end point [data] include: the discrimination of evaluator in relation to other data points calculated, the significance (or use) of the given material and its overall rating, both of which are a function of time.

fig. 3
The format for evaluation includes the type of equipment, its model number, the system employed by this model number and the type of material being evaluated.
 
Because these are pretty high level, and the other slides are generic graphs without data, rather titles like: Properties as Functions of Aging Time." I either think he used them in a class on electrical engineering for students, or to explain the processes he employed at his business to potential clients or investors.